Re: [csswg-drafts] [css-fonts] Proposal to expose font metrics (#4780)

> > font-family: Source Sans Pro, Arial;
> 
> What about an element where none of the characters in it are supported by Source Sans Pro, but are supported by Arial? In such an element, you probably let want the metrics to come from Arial, since that’s what all the text is rendered with.

This is a great question, as it poses: if the furthest fallback font is an emoji font for example, it might have vastly different sizing compared to, say, a wide fantasy-type font.

I would assume most authors would pick sensible fallbacks to keep this issue at a minimal. Additionally, this would probably gracefully degrade, but this would testing, as I am only assuming. Not to mention CKJ writing systems could trigger quite different edge cases. 

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Received on Wednesday, 19 February 2020 05:07:09 UTC